Some elements of the form may hold copyright in and of themselves, for example:

a logotype element on the page may have protection via trademark

a graphical design element or photograph may have standalone copyright

a block of original text used on the form (by way of explanation, etc.) can be considered a copyrightable work in isolation provided it meets the standards to be considered a creative work, but plain statements of fact such as field labels or button tooltips are not.

but the form itself is not a "creative work". The same is true of things like blank diaries, bank checks or sheets of headed notepaper.